Regular Expressions 101

^start of string

Group 1((0[1-9])|([1-8][0-9])|(9[0-8])|(2A)|(2B))

1st Alternative(0[1-9])

Group 2(0[1-9])

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative([1-8][0-9])

Group 3([1-8][0-9])

Character Class[1-8]

1-8one character from 1 (49₁₀) to 8 (56₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

3rd Alternative(9[0-8])

Group 4(9[0-8])

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

Character Class[0-8]

0-8one character from 0 (48₁₀) to 8 (56₁₀)

4th Alternative(2A)

Group 5(2A)

2Athe literal text 2A (case insensitive)

5th Alternative(2B)

Group 6(2B)

2Bthe literal text 2B (case insensitive)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Group 7([0-9]{3})?

?repeats the group contents below at most once:

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of string

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^((0[1-9])|([1-8][0-9])|(9[0-8])|(2A)|(2B)) *([0-9]{3})?$

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